I liked the chapter. If anything, it showed how much Kaidou actually relies on strength in numbers, instead of individual power. Also, the thing with Momo? A fraction of a second on a battlefield, enough to shock Oden to his very core and make him hesitate for that same amount of time. Because you never know, there's always a chance they got to Momo, no matter how improbable the chances are (you don't have the time to even think that fact through and realize the bluff for what it is). Also enough time for Kaidou to get so angry due to the wounds inflicted on his "immortal" body that he immediately counters on auto-pilot, until his opponent is out of commission.
When thinking about it, Kaidou has quite a lot of "back-up plans", like enormous defence forces, his powerful dragon devil fruit, and his invincible(?) body (which is seemingly tied to Big Mom). I get the impression the man himself actually doesn't possess any mental strength, and is a walking inferiority complex. Who knows, the moment someone deals him a massive mental blow, the guy might be completely broken and never recover.